20 miles of tunnels to control sewer overflows

The District of Columbia Water and Sewer Authority is implementing its $2.6 billion long-term control plan for combined sewer overflows, known as the DC Clean Rivers Project (DCCR).

The DCCR is comprised of 20 miles of tunnels to capture and convey wastewater to a nearby treatment center.

As a central part of this project, the Blue Plains Tunnel includes a 25 ft-diameter tunnel, 24,000 ft-long, with bolted/gasketed precast concrete liner, and five shafts. 

PROJECT DETAILS

LOCATION:
Washington DC, USA

PERIOD:
2013-2015

CLIENT:
District of Columbia Water and Sewer Authority

COWI'S SERVICES:

  • Resident engineering
  • Construction management for tunnels and shafts
  • Inspection services
  • Environmental and permit compliance monitoring
  • Field engineering
     

Get in contact

Mark Claassen
Vice President
Tunnels, United States

Tel: +1 9733796699

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